Safe checkout
Secure payments
Fast dispatch
1–2 day handling
Free shipping
U.S. ground
Warranty & RMA
Support after delivery
Vertiv PST4-850MT120 Emerson Liebert PST4-850MT120 850VA 500W 8-Outlet UPS w/ Batteries
- 850VA / 500W power capacity
- 8 total outlets (4 battery backup + surge protection, 4 surge protection only)
- Automatic Voltage Regulation (AVR) for voltage stabilization
- Audible alarms and front panel LEDs for status indication
- Compact tower design for easy placement
- Replaceable battery for extended lifespan
- USB connectivity for monitoring and management
PST4-850MT120 isn't on our shelf today — we source it to order. Request a quote and we'll confirm price and lead time within one business day.
Key specifications
See full specs ↓- Brand
- Vertiv (Emerson Liebert)
- Model
- PST4-850MT120
- SKU
- PST4-850MT120
- VA Rating
- 850VA
- Wattage Rating
- 500W
- Number of Outlets
- 8
Product details
The Vertiv PST4-850MT120 is an 850VA/500W Uninterruptible Power Supply (UPS) designed to protect sensitive electronic equipment from power disturbances. It features 8 outlets, including battery backup and surge protection, ensuring continuous operation during outages. This UPS is ideal for small office or home office environments.
Technical Information
| Brand | Vertiv (Emerson Liebert) |
| Model | PST4-850MT120 |
| SKU | PST4-850MT120 |
| VA Rating | 850VA |
| Wattage Rating | 500W |
Additional Specifications
| Number of Outlets | 8 |
| Battery Backup Outlets | 4 |
| Surge Protection Outlets | 8 |
| Form Factor | Tower |
Description
The Vertiv PST4-850MT120 provides reliable backup power and surge protection for a variety of electronic devices. Its Automatic Voltage Regulation (AVR) technology corrects minor voltage fluctuations without switching to battery power, thus conserving battery life and ensuring stable power delivery. This feature is crucial for protecting sensitive equipment from brownouts and overvoltages that can cause damage or data loss. The UPS is equipped with 8 outlets, offering a balanced combination of battery backup and surge protection. Four outlets provide both battery power and surge suppression, essential for critical devices like computers, monitors, and network equipment. The remaining four outlets offer surge protection only, suitable for less critical peripherals like printers or speakers. The unit's audible alarms and intuitive front panel LEDs provide clear status updates on power conditions and battery levels, allowing users to take appropriate action during power events. Designed with user convenience in mind, the PST4-850MT120 features a compact tower form factor that can be easily placed on a desk or floor. It supports USB connectivity, enabling integration with monitoring software for remote management and graceful shutdown capabilities. The battery is user-replaceable, extending the operational life of the UPS and reducing long-term costs. This UPS is an excellent choice for safeguarding essential equipment in home offices, small businesses, and retail environments.
Condition: Refurbished
Free U.S. ground shipping
Typically 1–2 days handling, 3–7 days in transit.
Purchase orders accepted
Government, enterprise, data center and small business.
Buying 10+ units?
Get volume pricing and availability for PST4-850MT120.




